A nut, flat on top and bottom having 6 flat sides. For items which have internal tapered or straight (parallel) pipe threads, specific electrical conduit size designation, and which when installed, provide a method of tightening to lock the connection, see locknut, electrical conduit. See also locknut, tube fitting. For items having a thickness (or height) exceeding two times the width across the flats, use post, electrical-mechanical equipment. (when height or thickness and/or width across the flats is designated as a tolerance dimension, the maximum dimension will be used to determine compliance.)
NSN 5925-01-160-8779
NSN 6610-01-050-3075
NSN 6135-01-202-8113
NSN 4140-00-753-9204
NSN 5925-01-189-9253
NSN 6650-01-062-8105
NSN 6650-01-017-0980
NSN 5960-01-334-5146
NSN 6240-00-196-4518
NSN 2925-00-956-0293
NSN 5985-00-350-2173
NSN 5965-01-539-7345